225/55R18 Tire Size Specifications
This tire size 225/55R18 fits 12 vehicles in our database.
Everything to know about the 225/55R18 tire size
Size geometry
A 225/55R18 tire has a 225mm section width and a 55% aspect ratio, mounted on a 18-inch rim. Sidewall height works out to 123.8mm (4.87") and overall outside diameter is 704.7mm (27.74"). At highway speed the tire completes about 452 revolutions per kilometre â your speedometer and odometer were calibrated against this number.
Direct substitute sizes
If 225/55R18 is unavailable, the closest same-diameter substitutes on the same rim are 215/58R18 and 235/53R18. Both keep your speedometer reading within 1% â safe for daily use, ABS, and stability control. Always verify load and speed ratings before swapping.
Plus / minus sizing options
For a 225/55R18 you can upsize to 235/47R19 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 215/63R17 (minus-one) for a softer ride or winter setup. Both stay inside the Âą3% diameter tolerance that ABS and TPMS systems expect.
Vehicle compatibility
12 vehicles in our database run the 225/55R18 tire size from the factory. Aftermarket fitment depends on rim width, offset, and clearance â match these specs to your wheel before purchasing tires.
Vehicles Using 225/55R18
Audi A6
Years: 2018 - 2026
GAC Motor GS4
Years: 2015 - 2026
Haima 7X
Years: 2020 - 2026
Haval Jolion
Years: 2020 - 2026
Honda HR-V
Years: 2023 - 2026
Infiniti QX50
Years: 2014 - 2017
Mitsubishi ASX
Years: 2010 - 2024
Mitsubishi Eclipse Cross
Years: 2017 - 2026
ORA Ballet Cat
Years: 2022 - 2026
Seres #3
Years: 2020 - 2026
Seres 3
Years: 2020 - 2026
Subaru Crosstrek
Years: 2018 - 2023
Subaru Forester
Years: 2014 - 2024